EP2870975A1 - Gaine comprenant une bague de verrouillage et seringue de sécurité comprenant ladite gaine - Google Patents

Gaine comprenant une bague de verrouillage et seringue de sécurité comprenant ladite gaine Download PDF

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Publication number
EP2870975A1
EP2870975A1 EP20130191842 EP13191842A EP2870975A1 EP 2870975 A1 EP2870975 A1 EP 2870975A1 EP 20130191842 EP20130191842 EP 20130191842 EP 13191842 A EP13191842 A EP 13191842A EP 2870975 A1 EP2870975 A1 EP 2870975A1
Authority
EP
European Patent Office
Prior art keywords
sheath
lock ring
protrusion
hub
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP20130191842
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German (de)
English (en)
Inventor
designation of the inventor has not yet been filed The
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SOFIC Societe Francaise dInstruments de Chirurgie
Original Assignee
SOFIC Societe Francaise dInstruments de Chirurgie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SOFIC Societe Francaise dInstruments de Chirurgie filed Critical SOFIC Societe Francaise dInstruments de Chirurgie
Priority to EP20130191842 priority Critical patent/EP2870975A1/fr
Publication of EP2870975A1 publication Critical patent/EP2870975A1/fr
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards

Definitions

  • the present invention relates to a sheath, comprising a rotating lock ring, protecting a cannula; the sheath is primarily designed to prevent or minimize accidental needlestick injuries.
  • the present invention also relates to an injection system comprising said sheath; especially the present invention relates to a safety syringe comprising said sheath, and more particularly to a safety syringe adapted to receive a medication-containing cartridge.
  • syringes have the particularity to comprise a sheath protecting the needle, which can be retracted or extended with respect to the sheath. In a retracted position, the needle is completely covered and secured by the sheath. In an extended position, the needle projects outside the sheath.
  • International patent application WO 2006/105006 discloses a safety syringe including locking positions, formed by an inner sleeve receiving a cartridge filled with liquid, an outer sleeve through which said inner sleeve is telescopically reciprocated, and a plunger assembly that is attached to the inner sleeve and used to eject the liquid.
  • This device is capable of both intermittent locking during use as well as permanent locking after use (page 5, lines 2-3), performed by pushing inward a tab which engages permanently a hole.
  • US patent application 2011/0082428 relates to a safety structure for covering a syringe needle including a safety sleeve and a hub.
  • the safety sleeve is fitted around the hub and provided with an axial sliding slot, a locating slot laterally extended from the sliding slot and a locating hole located at a bottom of the locating slot.
  • the protective sheath comprises a "retracted position before use” in the locating slot, an "ejection position” in the sliding slot and a “retracted position after use” in the locating hole.
  • this device does not provide a "retracted position during use”.
  • this safety structure does not provide a one-way path for the male means of the hub through the female means of the safety sleeve: backtracks are indeed needed in order to access to the various retracted positions.
  • said safety structure lacks of convenience and safety.
  • US patent US 4,994,045 discloses a safety syringe including a conventional syringe, a locating ring and an elongated and tubular sheath. This device is capable of both intermittent and permanent positions where the needle is secured, allowing the user to extend or retract the tubular sheath at will during use, and to definitely secure the needle after use. However, the various retracted positions are not transversally aligned (see figure 2 of US 4,994,045 ), resulting in a non-optimized sheath length as described further in the description of the invention.
  • European Patent EP 1 603 612 discloses a preservative sheath for an injection needle or cannula arranged on a cannula-holding support which can be fitted onto a syringe.
  • the sheath comprises guide means, which may be ramps, allowing the cannula to be in a retracted position before use, a retracted position during use, a retracted position after use and an ejection position.
  • guide means which may be ramps, allowing the cannula to be in a retracted position before use, a retracted position during use, a retracted position after use and an ejection position.
  • the various retracted positions are not transversally aligned, resulting in a non-optimized sheath length as described further in the description of the invention.
  • the needle protective sheath of the present invention comprises a lock ring cooperating with the protective sheath between three positions: a position before use, a position during use, and a position after use. In each of said positions the hub is located at the same place. This feature improves the syringe both from the point of view of the functional utility and the cost of manufacture.
  • said three positions are achieved thanks to a rotating lock ring which is instinctively rotated by the user.
  • a rotating lock ring which is instinctively rotated by the user.
  • an easy rotation is required for reaching said three positions.
  • the user had to move the syringe, and especially a protrusion of the hub united with the syringe, along a female means pathway through the different positions of the sheath; thus translations and rotations were needed.
  • the handling of the present invention is therefore easier and safer.
  • the sheath further comprises:
  • the whole length of the cannula is inside said sheath when the protrusion of the hub is located in the opening of the sheath.
  • the sheath protrusion has a ramp-shaped cross-section
  • the wall between the first recess and the third recess has a ramp-shaped cross section
  • the wall between the first recess and the second recess has a curved cross-section.
  • the wall between the first recess and the second recess prevents unintentional displacement of the sheath protrusion between said recesses, but enable intentional displacement by application of a torque by the user; and the wall between the first recess and the third recess prevents unintentional and intentional displacement of the sheath protrusion between said recesses, once the sheath protrusion is in the third recess.
  • the sheath further comprises a sliding opening, located transversally between the opening and the ejection means (EM), for receiving a protrusion located on the inner surface of the lock ring; and wherein:
  • the sheath further comprises anti-slipping means, including at least one rib for preventing dismounting of the hub from said sheath.
  • the distal end of said sheath is conical or beveled.
  • the sheath further comprises gripping means which are ribs covered by a grinding or an erosion grain such as VDI 20 to 30, located on the external surface of said sheath.
  • the present invention also relates to an injection system comprising a sheath according to the present invention, a hub comprising at least one protrusion adapted to cooperate with the sheath, and, optionally, a cannula protruding at both ends of the hub.
  • the present invention evenly relates to a syringe comprising a sheath according to the present invention or an injection system according to the present invention.
  • the syringe is designed to hold a cartridge which is immobilized in axial direction at the neck of said cartridge, via a blocking means.
  • said syringe is a disposable syringe having a precut located substantially at the distal end of the syringe, made of a series of perforations or one or more circumferential grooves.
  • the present invention relates to a protective sheath 1 for a cannula 4 arranged on a hub 3 which can be fitted onto a syringe, allowing a safe use of said cannula 4 without the risk of being accidentally pricked.
  • the sheath of the present invention comprises a lock ring 2.
  • the lock ring 2 is mounted on the outer surface of the sheath 1.11.
  • the internal diameter of said lock ring 2 is equal or slightly superior to the external diameter of the sheath 1.
  • the lock ring 2 has a length preferably ranging from 1.5 to 30 mm, preferably from 3 to 25 mm, more preferably from 5 to 20 mm.
  • the thickness of the lock ring 2 is comprised between 0.2 and 15 mm, preferably between 0.5 and 10 mm, more preferably between 2 and 8 mm.
  • the lock ring 2 is not mounted on the inner surface of the sheath 1.10. According to another embodiment, the lock ring 2 is mounted on the inner surface of the sheath 1.10.
  • the sheath of the present invention 1 comprises lock ring 2 cooperating with the protective sheath 1 between three positions: a position before use PBU, a position during use PU, and a position after use PAU.
  • the various positions of the lock ring 2 contribute to the healthcare worker's safety, in that:
  • the presence of the lock ring 2 on the sheath of the present invention 1 improves the functional utility and the cost of manufacture.
  • the sheath of the present invention 1 has indeed an optimized size.
  • the sheath of the present invention 1 requires indeed only rotation of the lock ring 2 for reaching the three positions; and in each of said positions, the hub 3 of the sheath 1 is located at the same place.
  • the whole length of the cannula 4 is inside the sheath 1 when the lock ring 2 is in the position before use PBU and in the position after use PAU. According to one embodiment, the whole length of the cannula 4 is inside the sheath 1 when the lock ring 2 is in the position before use PBU, in the position during use PU and in the position after use PAU. According to one embodiment, when the lock ring 2 is in the position during use PU, the cannula 4 may be inside the sheath 1 or may protrudes outside of the sheath 1 if the hub 3, united with the cannula 4, is moved in the ejection position EP thanks to the ejection means EM.
  • a hub 3 may be inserted inside a sheath 1 thanks to an injection means IM (described thoroughly hereafter).
  • the hub 3 then reaches a retracted position RP in the sheath 1.
  • the whole length of the cannula 4 is inside the sheath 1.
  • the lock ring 2 is in the position before use PBU.
  • the hub 3 cannot reach the distal end 1.8 of the sheath 1 and the cannula 4 is inside the sheath 1 temporarily.
  • the lock ring 2 rotates from the position before use PBU to the position during use PU.
  • the hub 3 may reach an ejection position EP thanks to ejection means EM (described thoroughly hereafter).
  • ejection position EP whole or part of the cannula 4 protrudes outside of the sheath 1.
  • the cannula may be pulled back inside the sheath and upon rotation of the lock ring 2, the lock ring 2 rotates from the position during use PU to the position after use PAU.
  • the cannula 4 is inside the sheath 1 permanently.
  • the sheath of the present invention 1 is particularly user-friendly, easy to use and safe for the user, as the only displacements required are rotation of the lock ring 2 with respect to the sheath 1 and translation of the hub 3 with respect to the sheath 1.
  • the use of the sheath 1 does not require rotation and translation of the hub 3 with respect to the sheath 1.
  • figures 1a, 1b, 1c describe a sheath 1 comprising a lock ring 2 rotatably mounted on the outer surface 1.11 of the sheath 1 and a cannula 4.
  • the lock ring 2 is in the position before use PBU; in figure 1b the lock ring 2 is in the position during use PU; and in figure 1c the lock ring 2 is in the position after use PAU.
  • Figures 1a-c also describes an injection means IM.
  • the lock ring comprises on the inner surface a first, a second and a third recess (respectively 2.4.1, 2.4.2, 2.4.3).
  • the first, second and third recesses 2.4.1, 2.4.2, 2.4.3 are adjacent and transversally aligned.
  • the first recess is located between the second and the third recess. Said recesses are designed for cooperating with a protrusion 1.1 on the outer surface 1.10 of the sheath 1.
  • the protrusion on the outer surface of the sheath 1.1 in cooperation with the three recesses on the inner surface of the lock ring 2.4.1, 2.4.2, 2.4.3 mechanically defines the three positions for the lock ring 2: a position before use PBU, a position during use PU, and a position after use PAU.
  • the lock ring 2 is designed so that in the position before use PBU, the protrusion on the outer surface of the sheath 1.1 is located in a first recess 2.4.1 on the inner surface of the lock ring 2. According to one embodiment, the lock ring 2 is designed so that in the position during use PU, the protrusion on the outer surface of the sheath 1.1 is located in a second recess 2.4.2 on the inner surface of the lock ring 2. According to one embodiment, the lock ring 2 is designed so that in the position after use PAU, the protrusion on the outer surface of the sheath 1.1 is located in a third recess 2.4.3 on the inner surface of the lock ring 2.
  • the sheath 1 has an overall shape of a hollow cylinder having a longitudinal axis X; said axis corresponds to the axis B-B in figures 2a-c , and to the axis C-C in figures 5a-c .
  • the sheath 1 has an internal diameter ranging from 3 to 20 mm, more preferably from 5 to 10mm.
  • the sheath 1 has an external diameter ranging from 4 to 21 mm, more preferably from 6 to 11mm.
  • the external and internal diameters of the sheath 1 are preferably substantially constant, at least in a first section of its length.
  • a substantially constant diameter means that said diameter may vary of maximum 20%, preferably 10%, more preferably 5%, even more preferably 1%, from its nominal value.
  • the sheath 1 has a length ranging from 30 to 250 mm, more preferably from 50 to 200mm, even more preferably from 125 to 175mm.
  • the sheath 1 is made of plastic, preferably transparent so that the cannula 4 may be visible through the sheath 1. In another embodiment, the sheath 1 is opaque. In one embodiment, the thickness of the sheath 1 is preferably substantially constant (for example with a variation of maximum 20%, 10%, 5%, or 1% from its nominal value), but may be narrowed at non-protective locations to save matter, for example at the distal and proximal ends 1.8 and 1.9 of said sheath 1. In one embodiment, the thickness of the sheath 1 is comprised between 0.2 and 5 mm, preferably between 0.5 and 3 mm, more preferably between 1 and 2 mm, and said thickness may be narrowed of between 20 and 60% at non-protective locations.
  • the sheath 1 comprises an ejection means EM, such as for example a longitudinal slot 1.5 which may cooperate with a protrusion 3.1 of the hub 3 (as shown in figures 6a-c ).
  • Said ejection means EM allows said hub 3 to switch from a retracted position RP to an ejection position EP, and conversely.
  • the hub 3 In the retracted position RP, the hub 3 is substantially at the proximal end 1.9 of the sheath 1, so that the whole length of the cannula 4 is inside said sheath 1.
  • the hub 3 In the ejection position EP, the hub 3 is substantially at the distal end 1.8 of the sheath 1, so that whole or part of the cannula 4 protrudes out of the sheath 1.
  • Said ejection position EP is reachable only from the retracted position RP thanks to the ejection means EM.
  • the ejection means EM preferably opens to the internal surface 1.10 and not to the external surface 1.11 of the sheath 1. This feature provides reinforcement for the guiding of protrusion 3.1 with the matter which covers the bottom of the ejection means EM and which forms the walls of the ejection means EM. However, it is possible to make the ejection means EM opens to both internal and external surfaces (respectively 1.10 and 1.11) of the sheath 1.
  • the ejection means EM may be any means that one skilled in the art would find suitable such as for example a longitudinal slot 1.5.
  • the ejection means EM comprises preferably a longitudinal slot 1.5 which is only formed on the internal surface 1.10 of said sheath 1.
  • the ejection means EM ends up substantially at the distal end 1.8 of the sheath 1, approximately at the beginning of the conical distal end, also named beveled portion 1.6 of said sheath 1.
  • the protrusion of the hub 3.1 may be stopped by the end of the ejection means EM either by the return of the sheath wall inside the sheath 1, at its distal end 1.8 and/or by anti-slipping means as detailed hereafter.
  • the sheath 1 also comprises an opening 1.2 for receiving a protrusion 3.1 of the hub 3 (as shown in figures 3a-c ).
  • the opening 1.2 defines an opening through the internal and external surface of the sheath (respectively 1.10 and 1.11).
  • the thickness of the protrusion 3.1 is equal or slightly smaller than the thickness of the sheath 1.
  • the hub 3 is inserted and slides along the inner surface of the sheath 1.10 by force-fitting until a protrusion of the hub 3.1 reaches the opening 1.2.
  • the hub 3 is in the retracted position with respect to the sheath 1 as long as the hub is located in the opening 1.2.
  • the opening 1.2 is located in line with the ejection means EM. According to one embodiment, the opening 1.2 is located in line with the longitudinal slot 1.5. According to one embodiment, the ejection means EM, preferably the longitudinal slot 1.5, extends from about the opening 1.2 to about the distal end 1.8 of the sheath 1.
  • the hub 3 is inserted through the proximal end 1.9 of the sheath 1 up to the opening 1.2.
  • the hub 3 is inserted and slides along the inner surface of the sheath 1.10 by force-fitting until the hub protrusion 3.1 reaches the opening 1.2.
  • the sheath is provided with an injection means IM for assisting in the insertion of the hub 3 inside the sheath 1 (as shown in figures 1a-c ).
  • An insertion means IM is made by scooping out the interior surface of the sheath 1.10 to obtain a groove opening only on the internal surface of said sheath 1.10.
  • said groove begins about the proximal end 1.9, preferably at the proximal end 1.9, and ends at the opening 1.2.
  • said injection means IM is in line with the longitudinal slot 1.5 and with the opening 1.2.
  • the injection means is an inclined grove: the depth of said groove varying from a null value about the opening 1.2 to a depth equal or less than the thickness of the hub protrusion 3.1 at the proximal end 1.9.
  • the groove of said injection means IM has a depth increasing gradually as one approaches the proximal end 1.9 of the sheath 1.
  • the width of said groove is equal to about the width of the hub protrusion.
  • said injection means IM leads to the opening 1.2 which preferably opens both to the internal and external surfaces 1.10 and 1.11 of said sheath 1.
  • said opening 1.2 is located further to the inclined plane of the injection means IM toward the distal end 1.8 of said sheath 1. This feature aims at facilitating the insertion of hub protrusion 3.1 in the sheath 1.
  • the lock ring 2 is retained with respect to the sheath 1 by means of a lock ring protrusion 2.1.
  • said lock ring protrusion 2.1 (i) extends in the direction of the cannula 4, (ii) is located on the inner surface of the lock ring 2 and/or (iii) cooperates with a sliding opening of the sheath 1.4.
  • the sliding opening 1.4 is located transversally between the opening 1.2 and the longitudinal slot 1.5.
  • the longitudinal slot extends from the at least one sliding opening 1.4 to about the distal end of the sheath 1.8.
  • the opening 1.2 and the sliding opening 1.4 defines T-shaped slot through the sheath 1; as shown in figure 7 .
  • the distal portion of said T-shaped slot corresponds to the sliding opening 1.4 and the proximal portion of said T-shaped slot corresponds to the opening 1.2.
  • the lock ring 2 is retained with respect to the sheath 1 when the lock ring protrusion 2.1 is located in the sliding opening 1.4 of the sheath 1.
  • the thickness of said lock ring protrusion 2.1 is equal or slightly larger than the thickness of the sliding opening 1.4.
  • the sliding opening 1.4 defines an opening through the internal and external surface of the sheath 1.10 and 1.11 and thus the thickness of the lock ring protrusion 2.1 is equal or slightly larger than the thickness of the sheath 1.
  • the lock ring protrusion 2.1 prevents any displacement of the hub 3 towards to distal end 1.8 further to the sliding opening 1.4 when the lock ring protrusion 2.1 is in line with the opening 1.2.
  • the lock ring 2 is inserted and slides along the outer surface of the sheath 1.10 by force-fitting until it reaches the sliding opening 1.4.
  • the length of the lock ring protrusion 2.1 in the axial direction is equal or slightly inferior to the length of the sliding opening of the sheath 1.4 in the axial direction. So with the lock ring protrusion 2.1 in the sliding opening of the sheath 1.4, any axial displacement is prevented.
  • the length of the lock ring protrusion 2.1 in the transversal direction is inferior to the length of the sliding opening of the sheath 1.4 in the transversal direction; thus allowing rotation of the lock ring 2 with respect of the sheath 1.
  • Said rotation of the lock ring 2 with respect to the sheath 1 corresponds to the rotation of the lock ring protrusion 2.1 inside the sliding opening of the sheath 1.4.
  • the ratio between the length of the sliding opening 1.4 in the transversal direction and the length of the lock ring protrusion 2.1 in the transversal direction is equal to at least 2; more preferably is equal to 2.
  • the lock ring protrusion 2.1 With the lock ring protrusion 2.1 in the sliding opening of the sheath 1.4, rotation is allowed within the boundaries of the sliding opening 1.4.
  • the lock ring 2 may rotate with respect to the sheath 1 along the whole sliding opening 1.4.
  • the lock ring protrusion 2.1 rotates with respect to the sheath 1 within the sliding opening 1.4.
  • the sheath of the invention 1 is delivered to the user with the lock ring protrusion 2.1 located inside the sliding opening of the sheath 1.4.
  • the lock ring 2 in order to make easier the localization of the lock ring protrusion 2.1, the lock ring 2 comprises an opening 2.3 adjacent to the lock ring protrusion 2.1.
  • the protrusion on the inner surface on the lock ring 2.1 temporarily prevents access between the opening 1.2 and the ejection means EM (e.g. longitudinal slot 1.5); as shown in figure 6a .
  • the hub protrusion 3.1 located in the opening 1.2, cannot reach the ejection means EM (e.g. longitudinal slot 1.5), and thus the canula 4 is safely enclosed in the sheath 1.
  • the lock ring 2 upon rotation of the lock ring 2 in a first direction, the lock ring 2 reaches the position during use PU.
  • the lock ring 2 is designed so that in the position during use PU, the protrusion on the inner surface on the lock ring 2.1 enables access between the opening 1.2 and the ejection means EM (e.g. longitudinal slot 1.5); as shown in figure 6b .
  • the hub protrusion 3.1 located in the opening 1.2, can reach the ejection means EM (e.g. longitudinal slot 1.5), and thus part of the canula 4 can be ejected out of the sheath 1.
  • the user may use the ejection means EM and slide the sheath 1 with respect to the hub 3 in the axial direction so that whole or part of the cannula protrudes out of the sheath in the ejection position (EP).
  • the hub protrusion 3.1 slides out of the opening 1.2, through the sliding opening 1.4, in the longitudinal slot 1.5.
  • the sheath 1 does not slide over the lock ring 2 but over the hub 3.
  • the lock ring upon rotation of the lock ring 2 in a direction opposite to the first direction, the lock ring reaches the position before use PU and then the position after use PAU.
  • the protrusion on the inner surface on the lock ring 2.1 definitely prevents access between the opening 1.2 and the ejection means EM (e.g. longitudinal slot 1.5); as shown in figure 6c .
  • the hub protrusion 3.1 located in the opening 1.2, cannot reach the longitudinal slot 1.5, and thus the canula 4 is safely enclosed in the sheath 1.
  • Figures 6a-c describes a sectional view of the sheath along section plane C-C as defined in figures 5a-c.
  • Figures 6a-c describe a hub 3 comprising a distal end 3.2 and a proximal end 3.3, a reception means 3.4 and two protrusions 3.1.
  • Figures 6a-c also describe two longitudinal slots 1.5 on the inner surface of the sheath 1 in line with the hub protrusions 3.1.
  • a lock ring protrusion 2.1 prevents access between the opening 1.2, in which is located the hub protrusion 3.1, and the longitudinal slot 1.5.
  • the disposition of the position before use PBU, the position during use PU, and the position after use PAU of the lock ring 2 also contributes to the healthcare worker's safety. Indeed, according to one embodiment, if the position during use PU may be reached from the position before use PBU by rotating the lock ring 2 clockwise, respectively anticlockwise, the position after use PAU is reached from the position during use PU by rotating the lock ring anticlockwise, respectively clockwise. So the healthcare worker cannot reach the position after use PAU from the position before use PBU inadvertently. Said feature is highlighted by the fact that the first recess on the lock ring 2.4.1 is located between the second recess 2.4.2 and the third recess 2.4.3. According to an embodiment, the second recess 2.4.2 is not located between the first recess 2.4.1 and the third recess 2.4.3.
  • the position during use PU could be reached from the position before use PBU after a clockwise rotation, respectively an anticlockwise rotation
  • the position after use PAU could be reached from the position during use PU by a clockwise rotation, respectively an anticlockwise rotation
  • the user could reach the position after use PAU from the position before use PBU due to a single excessive rotation.
  • Such excessive rotation would prevent the use of the syringe even before any injection.
  • the position after use PAU cannot be reached from the position before use PBU, through the position during use PU, by a continuing rotation. According to one embodiment, the position after use PAU can be reached from the position before use PBU, through the position during use PU, by a continuing rotation
  • the sheath 1 of the invention is delivered to the user with the lock ring 2 in the position before use PBU.
  • FIGs 5a-c describes indeed a sheath 1 according to one embodiment of the present invention.
  • the lock ring 2 is in the position before use PBU; in figure 5b the lock ring 2 is in the position during use PU; and in figure 5c the lock ring 2 is in the position after use PAU.
  • Figures 5a-c also point out section plane C-C.
  • the sheath 1 comprises a protrusion 1.1 on the outer surface for cooperating with the first, second and third recesses (respectively 2.4.1, 2.4.2, and 2.4.3) on the inner surface of the lock ring 2
  • the protrusion on the outer surface of the sheath 1.1 in cooperation with the three recesses on the inner surface of the lock ring 2.4.1, 2.4.2, 2.4.3 mechanically defines the three positions for the lock ring 2: a position before use PBU, a position during use PU, and a position after use PAU.
  • the wall between the first recess and the third recess is defined by a lock ring final protrusion 2.2.1; and the wall between the first recess and the second recess is defined by a lock ring temporary protrusion 2.2.2.
  • the sheath protrusion 1.1 has a ramp-shaped cross-section.
  • the lock ring temporary protrusion 2.2.2 has a curved cross-section, such as a hemisphere.
  • the lock ring final protrusion 2.2.1 has a ramp-shaped cross section.
  • the lock ring final protrusion 2.2.1 has a thickness superior to the thickness of the lock ring temporary protrusion 2.2.2.
  • the sheath protrusion 1.1 on the outer surface of the sheath 1 is designed so that when the lock ring 2 is in the position before use PBU, said sheath protrusion 1.1 is located in the first recess 2.4.1 (as shown in figures 3a ).
  • the sheath protrusion 1.1 moves over the lock ring temporary protrusion 2.2.2 and falls into the second recess 2.4.2.
  • the wall between the first recess 2.4.1 and the second recess 2.4.2 i.e. the lock ring temporary protrusion 2.2.2
  • the wall between the first recess 2.4.1 and the second recess 2.4.2 prevents unintentional displacement of the protrusion 1.1 between said recesses, but enable intentional displacement by application of a torque by the user.
  • the sheath protrusion 1.1 moves over the lock ring temporary protrusion 2.2.2 and falls into the first recess 2.4.1; and by further rotation the sheath protrusion 1.1 moves over the lock ring final protrusion 2.2.1 and falls into the third recess 2.4.3.
  • the sheath protrusion 1.1 and the wall between the first recess 2.4.1 and the third recess 2.4.3 is designed so the when the sheath protrusion 1.1 is located in the first recess 2.4.1, the ramps of the sheath protrusions 1.1 and of the lock ring final protrusion 2.2.1 face each other.
  • the sheath protrusion 1.1 and the wall between the first recess 2.4.1 and the third recess 2.4.3 is designed so the when the sheath protrusion 1.1 is located in the third recess 2.4.3, the radial wall of the sheath protrusions 1.1 and of the lock ring final protrusion 2.2.1 face each other. Therefore, when the lock ring 2 rotates from the position during use PU to the position after use PAU, the sheath protrusion 1.1, united with the sheath 1, rotates from the first recess 2.4.1 to the third recess 2.4.3 by moving over the ramp until the sheath protrusion 1.1 falls into the third recess 2.4.3. Said arrangement is then permanent as the radial surface of the sheath protrusion 1.1 abuts against the radial surface of the lock ring final protrusion 2.2.1
  • Figures 3a-c describes a sectional view of the sheath along section plane A-A as defined in figures 2a-c .
  • Figures 3a-c describe a hub 3 comprising a hub protrusion 3.1, surrounded by a sheath 1 comprising a sheath protrusion 1.1 on the outer surface of the sheath 1.11 and an opening 1.2, and surrounded a lock ring 2 comprising a lock ring final protrusion 2.2.1 and a lock ring temporary protrusion 2.2.2.
  • the sheath protrusion 1.1 is located in the first recess 2.4.1.
  • the sheath protrusion 1.1 In the position during use PU as described in figure 3b , the sheath protrusion 1.1 is located in the second recess 2.4.2. In the position after use PAU as described in figure 3c , the sheath protrusion 1.1 is located in the third recess 2.4.3.
  • the wall between the first recess 2.4.1 and the third recess 2.4.3 i.e. the lock ring final protrusion 2.2.1
  • the wall between the first recess 2.4.1 and the third recess 2.4.3 prevents unintentional and intentional displacement of the protrusion 1.1 between said recesses, once the sheath protrusion is in the third recess 2.4.3.
  • the lock ring 2 of the present invention may take 3 positions with respect to the sheath 1. In another embodiment, the lock ring 2 of the present invention may take more than 2 positions with respect to the sheath 1. In an embodiment, the present invention does not include any device featuring two positions only.
  • the sheath 1 does not provide a priming position distinct from the ejection position.
  • the protrusion of the hub 3.1 is not temporary locked in the ejection position. In another embodiment, the protrusion of the hub 3.1 is temporary locked in the ejection position.
  • the injection means IM of the sheath 1 provides a one way path for the protrusion 3.1 for inserting the hub from the proximal end of the sheath 1.9 to the opening 1.2; i.e. to the retracted position RP.
  • the lock ring 2 When the hub is in the retracted position RP, the lock ring 2 may rotate between three positions (position before use PBU, position during use PU or position after use PAU). When the lock ring 2 is in the position during use PU, the protrusion of the hub may move from the retracted position RP to the ejection position EP. In the position after use, the hub is definitely locked in the sheath. The final lock in the position after use PAU prevents a cannula 4 equipped with the sheath of the present invention 1 to be reused. According to one embodiment, when the hub 3 is in the retracted position, the whole length of the cannula 4 is inside the sheath 1.
  • the sheath 1 of the present invention does not comprise a transitory position.
  • Injection means IM are preferably one-way transition means, meaning that they allow the transition from a first position to a second position only, but do not allow the reverse transition back from the second position to the first position. These transition means comprise therefore advantageously anti-return means.
  • the achievement of a one-way path ensures an ease of use.
  • the sheath 1 contains injection means IM and ejection means EM which provide a precise continuous one-way path for the protrusion of the hub 3.1; therefore avoiding routing errors and making use easier and safer.
  • the sheath 1 contains injection means IM which provide a precise one-way path for the protrusion 3.1; therefore avoiding routing errors and making use easier and safer.
  • the ejection means EM allows reverse transition. In one embodiment, the ejection means EM is the only means which allows reverse transition. It is obvious from one skilled in the art that the ejection means EM to the ejection position has to allow reverse transition.
  • a major drawback of using a protective sheath on a cannula is the reduction of manipulation freedom during operation, due to the volume of said sheath.
  • a safe manipulation of a cannula 4 inserted into a sheath 1 is obtained when safety lengths between the sharp edges of the cannula (4.1 and 4.2) and the sheath ends (1.8 and 1.9) are respected (cf. figures 4a-c ).
  • the sheath 1 has therefore to be as long as the cannula length plus the safety lengths.
  • Safety length depends on the diameter of the opening at the sheath ends (1.8 and 1.9) from where a cannula end (4.1 or 4.2) may be accessed.
  • a safety length of between 1 and 5 mm, preferably about 3 mm has to be respected if the diameter of the opening at the sheath ends (1.8 or 1.9) is of about 10 mm.
  • the present invention provides a protective sheath 1 in which the proximal and distal portions of the cannula 4 are protected.
  • the cannula 4 arranged on the hub 3 has to exceed the proximal end of the hub 3.3.
  • the proximal end of the cannula 4.2 protruding from the proximal end of the hub 3.3, perforates the carpule hold in the barrel of a syringe when said syringe is inserted inside the proximal part of the sheath 1.9. Therefore it is necessary to protect the user from the proximal end of the cannula 3.3.
  • the opening 1.2 which defines the retracted position RP is positioned such as the proximal end and the distal end of the cannula (4.1 and 4.2) are contained inside the sheath 1.
  • the cannula 4 may be totally contained inside the sheath 1. Especially, in the invention, the protection of the cannula 4 is granted only by the sheath 1 and not by the hub 3, nor by the lock ring 2.
  • the present invention aims at protecting healthcare worker from needlestick injuries.
  • the sheath does not to prevent a patient from seeing the needle prior to an injection. In another embodiment, the sheath prevents a patient from seeing the needle prior to an injection.
  • the hub 3 and especially the hub protrusion 3.1 united with the hub 3, stay in the same position with respect to the sheath.
  • the sheath length can thus be optimized; and the sheath can be the shortest possible while effectively protecting the cannula.
  • the present invention provides a sheath 1 having an optimized sheath length.
  • the hub 3 has to remain in the sheath 1.
  • a gap between the sheath 1 and the hub 3 in the locking area cannot be avoided.
  • the lock ring protrusion 2.1 has a thickness equal or larger than the thickness of the sheath 1; thus the lock ring protrusion 2.1 blocks the hub protrusion 3.1 in the position before use and the position after use from inadvertent forth displacement.
  • the sheath 1 according to the invention may further comprise anti-slipping means.
  • anti-slipping means include means for preventing dismounting of the hub 3 from the sheath 1.
  • said anti-slipping means prevents the hub from slipping under the sheath when the hub is moved towards the proximal end of the sheath 1.9.
  • at least one rib may be added, in combination with the hub protrusion 3.1. This rib is advantageously designed so that once the hub 3 is inserted in the sheath 1 and is passed across said rib, this rib prevents said hub 3 to step back, acting thus as a non-dismountable feature.
  • anti-slipping means may include inclined plane at the proximal end of protrusion 3.1 and at least one rib toward the distal end 1.8 of said sheath 1 so that protrusion 3.1 are not likely to pass across said rib if a slipping of the hub 3 within the sheath 1 occurs.
  • the angles of the inclined planes are such that when forces are applied in an axial direction, forces perpendicular to the axis force the sheath 1 to get narrower to the hub 3.
  • the angles range preferably from 30° to 60°, more preferably from 40° to 50°, even more preferably about 45°.Therefore, the slipping of the hub 3 under the sheath 1 is avoided, and the safety is improved.
  • anti-slipping means include means for preventing the releasing of the hub out of the sheath when the hub is in the ejection position.
  • anti-slipping means may include inclined plane at the distal end of protrusion 3.1 and at least one rib, located just next to any hole or groove of the sheath 1 toward the proximal end 1.9 of said sheath 1 so that protrusion 3.1 are not likely to pass across said rib if a slipping of the hub 3 within the sheath 1 occurs.
  • the angles of the inclined planes are such that when forces are applied in an axial direction, forces perpendicular to the axis force the sheath 1 to get narrower to the hub 3.
  • the angles range preferably from 30° to 60°, more preferably from 40° to 50°, even more preferably about 45°.
  • the distal end 1.8 of the sheath 1 is preferably conical or beveled. This shape results on providing a large section in the sheath 1 for a cannula 4 which may be inadvertently bended, and in being tight enough at the distal end 1.8 to avoid the fingers to access said cannula 4.
  • the proximal end 1.9 of the sheath 1 is not conical or beveled in order to easy the insertion of the distal end of a syringe.
  • the protective sheath 1 has a length adapted to protect the user from needlestick.
  • the distal end 1.8 of the sheath 1 does not comprise any additional piece, such as a plug, to prevent the hub 3 to step out of the sheath 1.
  • the sheath 1 further comprises gripping means, providing a good grip toward the gloves of healthcare workers.
  • Said gripping means may be for example ribs, preferably covered by a grinding or an erosion grain like VDI 20 to 30.
  • Said gripping means may be located all over the sheath 1 and the lock ring 2, preferably on the outer surface of the lock ring 2 and on the outer surface of the gripping portion 1.7.
  • every protrusion (on the hub, on the sheath and on the lock ring) and every recess or slot cooperating with said protrusions are arranged in two identical systems diametrically opposite on the hub, on the sheath and on the ring regarding the axis X.
  • every protrusion (on the hub, on the sheath and on the lock ring) and every recess or slot cooperating with said protrusions are arranged in 2, 3, 4, 5, or 6 identical systems equally spaced on a diameter of the hub, of the sheath and of the lock ring regarding the axis X.
  • all systems are preferably identical.
  • the present invention further relates to an injection system, comprising a sheath 1 and a hub 3, inserted within said sheath 1.
  • the hub 3 has an overall shape of a cylinder having a longitudinal axis X'.
  • the hub 3 is open at its proximal end 3.3 and is closed at its distal end 3.2 on the cannula 4 or on a cylindrical cavity for the reception of the cannula 4.
  • the hub 3 comprises a reception means 3.4 at its proximal end 3.3, designed to receive the distal end of a syringe, which is the end farthest to the thumb area of a syringe.
  • the reception means 3.4 is a thread allowing a clipping or a screwing of the distal end of a syringe.
  • This thread may be sectioned by two longitudinal slots, for ensuring a clipping by pulling away the two threaded parts forming each a jaw, during the positioning of the hub 3 on the syringe distal end.
  • the hub 3 comprises a cannula 4
  • said cannula 4 protrudes both distal end 3.2 and the proximal end 3.3 of the hub 3.
  • the cannula 4 is in fluid communication with the content of said syringe via its proximal end 4.2.
  • the content of the syringe may be flowed through the cannula 4 from the proximal end 4.2.
  • the content of said syringe may be for example a pharmaceutical composition, which may be contained within a cartridge 5 or the barrel of said syringe, depending on the syringe type.
  • the cannula may comprise two separate parts (i.e. two cannulae) one protruding outside of the distal end of the hub 3.2 and one protruding outside of the proximal end of the hub 3.3; said two cannulae being fluidly connected inside the hub.
  • the hub 3 is used to move between the various position implemented in the sheath 1, to hold the cannula 4 and, optionally, to fluidly connected the cannulae; however the hub 3 is not design to protect the user from the cannula.
  • the hub 3 has an external diameter slightly inferior to the internal diameter of the sheath 1.
  • the hub 3 further comprises at least one, or two, three, four, five or six; preferably two protrusions 3.1 diametrically opposite regarding the axis X'. In one embodiment, the hub 3 further comprises at least one protrusion 3.1. In a preferred embodiment, the hub 3 further comprises at least two protrusions 3.1 diametrically opposite regarding the axis X'. In another embodiment, the hub 3 further comprises at least three protrusions 3.1 regularly spaced on the circumference of the hub 3. In another embodiment, the hub 3 further comprises at least four protrusions 3.1 regularly spaced on the circumference of the hub 3. In another embodiment, the hub 3 further comprises at least five protrusions 3.1 regularly spaced on the circumference of the hub 3.
  • the hub 3 further comprises at least six protrusions 3.1 regularly spaced on the circumference of the hub 3. At these protrusions, the diameter of the hub 3 is greater than the internal diameter of the sheath 1, and preferably substantially identical (permitting a variation of 10%, 5%, or 1% for example), or slightly inferior, to the external diameter of the sheath 1.
  • the sheath 1, the lock ring 2 and the hub 3 are adapted depending on the number of protrusion 3.1. So in one embodiment wherein the hub comprises 2 protrusions 3.1, then (1) the sheath 1 comprise, diametrically opposite, two sheath protrusions 1.1, two openings 1.2, two sliding openings 1.4, two longitudinal slots 1.5 and two injection means IM; and (2) the lock ring 2 comprises, diametrically opposite, two lock ring final protrusions 2.2.1, two lock ring temporary protrusion 2.2.2, two openings 2.3, and two recesses for the sheath 2.4.1, 2.4.2, 2.4.3 (i.e. 6 recesses).
  • the sheath 1 comprise, regularly spaced on the circumference of the sheath 1, more than two sheath protrusions 1.1, more than two openings 1.2, more than two sliding openings 1.4, more than two longitudinal slots 1.5 and more than two injection means IM; and (2) the lock ring 2 comprises, regularly spaced on the circumference of the lock ring 2, more than two lock ring final protrusions 2.2.1, more than two lock ring temporary protrusion 2.2.2, more than two openings 2.3, and more than two recesses for the sheath 2.4.1, 2.4.2, 2.4.3.
  • the hub 3 is maintained inside the sheath 1 due, in use, to the presence of the protrusion 3.1 inside the thickness of the sheath 1, preferably inside the opening of the sheath 1.2.
  • the hub 3 does not contain a U-shaped channel or groove around the hub protrusion 3.1.
  • the hub 3 is intended to be introduced at the proximal end 1.9 of the sheath 1, so that the axes X and X' line up.
  • Protrusions 3.1 are thus advantageously adapted to be inserted in female means of the sheath 1.
  • protrusions 3.1 of the hub 3 are outwards projections such as bosses.
  • protrusions 3.1 of the hub 3 are bosses.
  • the injection system of the invention comprises a sheath 1 and a hub 3 inserted in said sheath 1, wherein the protrusions 3.1 are in the opening 1.2 of the sheath 1.
  • the injection system of the invention is delivered to the user with the protrusions 3.1 in the opening 1.2.
  • the injection means IM is thus used during the manufacturing and/or assembly of the injection system of the invention.
  • the sheath 1 of the present invention is not self-deploying.
  • This invention also relates to a syringe, preferably to a dental syringe for the injection of a pharmaceutical composition, for instance, of a local anesthetic agent, comprised within a cartridge 5 or the barrel of said syringe; said syringe being equipped with a sheath protecting an injection needle or cannula arranged on a hub, or being equipped with an injection system according to the invention comprising a sheath 1, a hub 3 and a cannula 4.
  • a syringe preferably to a dental syringe for the injection of a pharmaceutical composition, for instance, of a local anesthetic agent, comprised within a cartridge 5 or the barrel of said syringe; said syringe being equipped with a sheath protecting an injection needle or cannula arranged on a hub, or being equipped with an injection system according to the invention comprising a sheath 1, a hub 3 and a cannula 4.
  • no other piece than the sheath 1 is intended to protect the cannula 4: in other words, the sheath 1 is the only safety part for the protection of the cannula 4.
  • no spring is involved in the protection of the cannula 4, for example in an automatic passage from an extended position to a retracted position, preventing thus a hazardous release of said spring.
  • the hub 4 is intended to be positioned at the distal end of the syringe, and is aimed at ensuring the entry of the proximal end 4.2 of the cannula 4 within the cartridge 5 or barrel containing the pharmaceutical composition.
  • the hub 3 is screwed on the distal end of the syringe.
  • the hub 3 and the syringe are integrally jointly formed.
  • the syringe is a standard syringe.
  • the syringe is designed to hold a cartridge 5.
  • the syringe is designed to hold a cartridge 5
  • said syringe is equipped with at least one means to hold a cartridge 5.
  • the syringe is equipped in a first section of a first means to hold a cartridge 5, and is equipped in a second section of a second means to hold said cartridge 5, said means being complementary to safely hold said cartridge 5.
  • first means to hold the cartridge 5 are self demolding clips 6.1, presenting a protrusion to hold said cartridge 5, said protrusion being flexible enough to allow the insertion of said cartridge 5 (as shown in figure 8 ).
  • the second means to hold the cartridge 5 is the bottom of the syringe 6.2, as described in figure 9 .
  • the cartridge 5 is totally immobilized in radial direction once inserted into the self demolding clip, avoiding thus to fall out of the syringe.
  • the cartridge 5 is immobilized in axial direction via a blocking means 6.3.
  • An axial immobilization is of great importance for the present invention, since active aspiration is therefore allowed by suction of the piston of the syringe. This is particularly useful in dental care, during anesthesia for instance.
  • the dentist loads a cartridge containing the anesthetic agent in a syringe and inserts then the needle tip into the gum. If the needle tip is inserted into a blood vessel, a depression will immediately aspirate blood into the cartridge.
  • the dentist in order to avoid an injection of anesthetics into a blood vessel, will be averted by the change of the anesthetic color.
  • the cartridge 5 is advantageously maintained at its neck 5.1, so that the length of the cartridge 5 does no longer play a role in the aspiration process.
  • the syringe of the invention is therefore adaptable on cartridges having different lengths.
  • the blocking means 6.3 is a clip, as shown in figure 10 .
  • the blocking means 6.3 also immobilizes the cartridge 5 radially.
  • the blocking means 6.3 is advantageously flexible, allowing the cartridge insertion.
  • the cartridge head will push the blocking means 6.3 up (cf. figure 10 ).
  • the blocking means 6.3 drops back and holds the cartridge 5 at its neck 5.1, immobilizing thus said cartridge 5 for active aspiration (cf. figure 11 ).
  • the blocking means 6.3 may indeed be slightly pushed upward during each pressure on the plunger of the syringe, and will then come back to its initial position creating a depression in the cannula 4.
  • the blocking means 6.3 allows the cartridge 5 to travel between 1 and 5 mm, more preferably between 2 and 4 mm, to assure passive aspiration.
  • Chirurgical instruments are manipulated with latex gloves. During the operation the gloves get wet and the friction forces of the gloves rubbers are reduced.
  • soft overmolding may be installed in portion of the syringe, such as the thumb area, and the grip area.
  • a surface treatment like erosion graining VDI 20 to 30 or surface grindings, nobs or ribs may also be used to increase the surface friction.
  • Material for these grips may be for example SEBS, TPU, TPE, preferably SEBS (Kraiburg Thermoplast W, Soloplast TH, etc.).
  • the syringe of the invention provides a comfortable and safe use.
  • the syringe of the invention is a disposable syringe, and allows preferably only a single use.
  • the syringe may have the particularity to be conveniently broken after use, in order to separate the sticking part from the non-sticking part.
  • the sticking part comprises the cannula 4 covered by the sheath 1, the sheath 1, the lock ring 2, the hub 3 and a optionally the distal end of the syringe which is engaged in the reception means 3.4 of the hub 3, and the non-sticking part comprises substantially the totality of the syringe which may comprise a cartridge 5.
  • a means for an easy and defined breakage is for example a precut, made of a series of perforations, or one or more circumferential grooves, located substantially at the distal end of the syringe, for example in the last 3 cm, 2 cm, 1 cm or 5 mm of said syringe.
  • a means for an easy and defined breakage is a circumferential groove.
  • the invention provides a really convenient end of life by an unscrewing movement followed by a break.
  • the invention provides a really convenient end of life by a screwing movement followed by a break.
  • the syringe of the present invention comprises a cartridge 5 which is immobilized in radial direction via demolding clips 6.1 and the back of the syringe 6.2.
  • the syringe of the present invention comprises a plunger equipped with a plunger seal comprising lips, wherein said lips may bend backwards for an easier introduction into the cartridge 5, said plunger seal being optionally overmolded on the plunger.
  • the syringe of the present invention comprises a precut located substantially at the distal end of the syringe, made of a series of perforations or one or more circumferential grooves, preferably one circumferential groove.
  • This invention further relates to a manufacturing device, preferably a mould or an assembly machine, for manufacturing a sheath 1, a hub 3, and/or a syringe according to the present invention.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
EP20130191842 2013-11-06 2013-11-06 Gaine comprenant une bague de verrouillage et seringue de sécurité comprenant ladite gaine Ceased EP2870975A1 (fr)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016185212A1 (fr) * 2015-05-21 2016-11-24 Astek Innovations Limited Seringue d'anesthésie dentaire à usage unique.
WO2021060965A1 (fr) * 2019-09-26 2021-04-01 Tay Keng Kiong Ensemble d'aiguille d'injection de sécurité

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4994045A (en) 1990-04-20 1991-02-19 Sherwood Medical Company Split sleeve safety syringe
EP1603612A2 (fr) 2003-03-11 2005-12-14 Jean-Luc Jouvin Fourreau de protection pour canule
WO2006105006A2 (fr) 2005-03-31 2006-10-05 Milestone Scientific, Inc. Seringue de surete
WO2007026163A1 (fr) * 2005-09-01 2007-03-08 Owen Mumford Limited Ensemble de coiffe d’aiguille
US20110082428A1 (en) 2009-10-07 2011-04-07 Wu-Shun Huang Safety structure for covering syringe needle
WO2011117284A1 (fr) * 2010-03-25 2011-09-29 Sanofi-Aventis Deutschland Gmbh Module médicamenteux avec sélection par l'utilisateur
US20110288490A1 (en) * 2010-05-21 2011-11-24 Miller Stuart H Enveloping needle stick protection device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4994045A (en) 1990-04-20 1991-02-19 Sherwood Medical Company Split sleeve safety syringe
EP1603612A2 (fr) 2003-03-11 2005-12-14 Jean-Luc Jouvin Fourreau de protection pour canule
WO2006105006A2 (fr) 2005-03-31 2006-10-05 Milestone Scientific, Inc. Seringue de surete
WO2007026163A1 (fr) * 2005-09-01 2007-03-08 Owen Mumford Limited Ensemble de coiffe d’aiguille
US20110082428A1 (en) 2009-10-07 2011-04-07 Wu-Shun Huang Safety structure for covering syringe needle
WO2011117284A1 (fr) * 2010-03-25 2011-09-29 Sanofi-Aventis Deutschland Gmbh Module médicamenteux avec sélection par l'utilisateur
US20110288490A1 (en) * 2010-05-21 2011-11-24 Miller Stuart H Enveloping needle stick protection device

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Title
"Prevention CfDCa", OVERVIEW: RISKS AND PREVENTION OF SHARPS INJURIES IN HEALTHCARE PERSONNEL, 2004
WILSON ET AL.: "The use of blunt needles does not reduce glove perforations during obstetrical laceration repair", AM. J. OBSTET. GYNECOL., vol. 199, no. 6, 2008, pages 641

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016185212A1 (fr) * 2015-05-21 2016-11-24 Astek Innovations Limited Seringue d'anesthésie dentaire à usage unique.
WO2021060965A1 (fr) * 2019-09-26 2021-04-01 Tay Keng Kiong Ensemble d'aiguille d'injection de sécurité

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